The doctor called the violation of body thermoregulation a symptom of a dangerous disease.

Lymphoproliferative diseases are a group of diseases in which the natural process of formation of lymphocytes (cells of the immune system) fails, and they begin to multiply uncontrollably. On August 16, Alexandra Fileva, an expert at the Hemotest Laboratory, told Izvestia about how this manifests itself and what needs to be done in such a situation.

"This includes different types of lymphomas (Hodgkin's lymphoma and non-Hodgkin's lymphomas), chronic lymphocytic leukemia and some other rare diseases. One of the possible symptoms of such diseases is a malfunction in thermoregulation, that is, a violation of the body's ability to maintain a normal body temperature," she said.

Thermoregulation disorders most often occur in patients with lymphomas. This is especially true for Hodgkin's disease, which often causes prolonged fever without an obvious cause. The same problems can occur with aggressive forms of non-Hodgkin's lymphomas and in the late stages of chronic lymphocytic leukemia. In these cases, the body loses the ability to adequately control temperature, which leads to its steady increase or, conversely, a critical decrease.

"Failures in the regulation of body temperature occur due to several interrelated factors. The first is due to the fact that tumor cells produce specific biologically active substances that affect the thermoregulation center in the brain. This leads to incorrect operation of the heat exchange mechanisms," the expert explains.

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Another reason why patients have problems with heat exchange is enlarged lymph nodes in the chest or abdominal cavity. They can compress nerve endings that help the body maintain a normal body temperature. In addition, due to a weakened immune system, the body becomes more vulnerable to infections. Any infection usually causes fever and chills, which further exacerbates thermoregulatory disorders.

"Patients may have different types of disorders. The most common symptom is a constant slight increase in temperature (37-38 degrees) or periodic fever for no apparent reason. The temperature can rise in waves," the doctor describes.

Some patients, on the contrary, experience hypothermia — a decrease in body temperature below normal. This happens with severe exhaustion, poor blood circulation, or damage to areas of the brain responsible for thermoregulation. In addition, many patients suffer from severe sweating at night, a constant feeling of cold or poor tolerance of heat.

The main recommendation for people with lymphoproliferative diseases is moderate physical activity. It is useful, but requires a special approach due to problems with body temperature control.

"Patients with fever should practice in the cool hours of the day, giving preference to calm activities such as walking or swimming, completely eliminating intense exercise and observing the drinking regime," the expert advises.

And for those who suffer from low temperatures, she recommends avoiding hypothermia by increasing the load in a dosed manner, doing warm-up exercises and choosing clothes that keep warm.

Regardless of the type of thermoregulation disorder, it is necessary to consult with your doctor before starting any physical activity, she concluded.

Polina Lepilova, a general practitioner and neurologist at the Sberbank Health medical company, told Izvestia on June 19 that excessive sweating, or hyperhidrosis, can occur even at rest, without obvious causes such as fever or physical exertion.

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